Exterior noises

Tenant rights is very important. I guess you could needed to inspect the apartment thorughly when you were renting the room. As you mentioned, trains frequency to pass from this tracks are every 2 to 3 hours, You could have also remained in house for that time when you were renting the apartment, so if train have came and you could have easily understood how and how much does the apartment shakes, or what you could have faced problems in future. However now as you have left the premises, if your belongings that broke were of importance or costly, then why not go ahead with some legal help.

As a tenant it is very important that you have even just a little bit knowledge of your state laws and landlord-tenant laws. Were you able to do a thorough walkthrough of the apartment before you moved in? You know that as a tenant you have the right to quiet enjoyment and since you are not experiencing this then you can break your lease for landlord breach of contract. You need to serve your landlord with a written notice to vacate the rental unit first before you move out.